JP3800860B2 - Vehicle door closing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door closing device for a railway vehicle.
[0002]
[Prior art]
Conventionally, when closing the door in the open state, when the conductor switch is switched, the solenoid valve for opening / closing operation is switched, air flows into the left side of the cylinder of the door closing machine, and the air on the right side passes through the solenoid valve. Is discharged and the door closes.
When the door is closed and the door closing switch is switched, the solenoid valve for weakening operation is switched by the controller incorporating the sequence of weakening operation, and the solenoid valve is held for the set time. The air on the left side of the door-closing machine is discharged to the set pressure of the pressure reducing valve.
For this reason, the door closing force commensurate with the pressure drop is reduced, and the door closing force becomes weak during the set time.
[0003]
In this way, the door closing force is weakened for a certain period of time after the door is closed and the door closing switch is switched, even if a thin object such as a fingertip or clothing is caught in the door rubber. This is because the door closing switch is switched and it is determined that the door is closed on the circuit.
Therefore, by doing in this way, even when an object that causes the door closing switch to be switched is sandwiched, the customer can easily open and close the door within the set time. I have to.
[0004]
[Problems to be solved by the invention]
However, in the conventional door closing device, when the passenger forcibly opens the door to remove the pinched object, the door closing force is weakened. Therefore, even after removing the pinched object, the door closing force is reduced. Since it does not become strong, it is possible to get on the door more than necessary within the weak setting time T1 (FIG. 3 to be described later), and when the weak setting time expires, the door closing force increases and the door suddenly It was dangerous to close. Further, since the door can be easily opened within the weak setting time, there is a problem that it is not possible to prevent the user from intentionally opening the closed door and entering the vehicle.
The present invention has been made in view of the above-described points, and an object of the present invention is to solve these problems and provide a safer door closing device for a railway vehicle.
[0005]
[Means for Solving the Problems]
In other words, the means to achieve that purpose is
1. In claim 1,
A door closing machine that opens and closes the door by pneumatic drive, a conductor switch that opens and closes the door according to the command of the conductor, an electromagnetic valve for opening and closing operation and an electromagnetic valve for weakening the door closing force that controls the air transmitted to the door closing machine, A pressure reducing valve that engages with the door closing force weakening electromagnetic valve, a door closing switch that operates when the door is closed, and a controller that controls the opening / closing operation electromagnetic valve and the door closing force weakening electromagnetic valve. ,
When the door is closed to start the train, even if a thin object such as a fingertip or clothing is caught, it is absorbed by the deformation of the rubber at the door end attached to the door closing side, and the door is completely closed If the passenger forcibly opens the door during the door closing force weakening operation, the door closing force weakening operation is interrupted and the normal door is closed. The vehicle door closing device includes a controller having a control sequence that returns to a door closing force weakening operation again after the door is closed.
[0006]
2. In claim 2,
The controller includes a control sequence circuit, and the control sequence circuit includes:
Receives the signal from the conductor switch and supplies air to the door closing side of the door closing machine via the solenoid valve for opening and closing operation and the solenoid valve for reducing door closing force, and from the solenoid valve for opening and closing operation to the door opening side of the door closing machine Exhaust the air
When the door is closed, the door closing switch is activated to receive the signal, and the received signal urges the door closing force weakening solenoid valve to stop the supply of air to the door closing side of the door closing machine. At the same time, air is released from the pressure reducing valve set to a predetermined pressure to the atmosphere, the pressure inside the door closing side of the door closing machine is reduced, and at the same time the predetermined door closing force weakening operation duration is maintained,
After the door closing force weakening operation duration has elapsed, the door closing force weakening solenoid valve is de-energized, air is supplied into the door closing side, the door is closed, and the vehicle is in a starting state.
If the fingertip is caught in the door within the door closing force weakening operation continuation time, for example, the door closing side of the door closing machine is in a decompressed state, so the door can be opened by hand,
If the door is opened to such an extent that the fingertip can be removed by performing this operation, the door closing switch that has been operating until now is opened and the solenoid valve for reducing the door closing force is de-energized so that the air is closed. Supplied to the door closing side of the machine,
The door closes again and the door closing switch is activated, and the inside of the door closing side is depressurized.
2. The vehicle door closing device according to claim 1, wherein the door opening / closing operation can be repeated as long as the opening / closing operation of the door is within the door closing force weakening operation duration time.
[0007]
With this configuration, the effect is that the passenger pinches an object that cannot be detected by the door closing switch, and when trying to forcibly open the door in order to remove it, the door is easily opened, so the door can be opened easily and the object can be opened. Although the door can be taken out, the door closing switch is turned on immediately, so that the door closing force returns to normal operation, and the door is pulled back only by slightly opening the door.
Even if the door is forcibly opened after the door is closed, the door opens slightly at the first moment, but the door returns to the normal door closing force immediately after that, so the door cannot be retracted and entered.
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an explanatory diagram for explaining a vehicle door closing device of the present invention, FIG. 2 is an operational characteristic diagram showing an embodiment of the controller of the present invention of FIG. 1, and FIG. 3 is a related art in comparison with FIG. FIG.
In FIG. 1, an air cylinder 2 serving as a door closing machine that opens and closes the doors 1 and 1 by pneumatic driving, a conductor switch 4 that opens and closes the doors 1 and 1 according to a command from the conductor, and air transmitted to the door closing machine are controlled. A solenoid valve 5 for opening / closing operation and a solenoid valve 6 for weakening the door closing force, a pressure reducing valve 7 engaged with the electromagnetic valve 6 for weakening the door closing force, a door closing switch 3 which operates when the doors 1 and 1 are closed, It comprises a controller 8 that controls the solenoid valve 5 for opening / closing operation and the solenoid valve 6 for reducing door closing force. In addition, 9 and 9 are door rubber.
[0009]
Hereinafter, a description will be given based on FIG. 2 with reference to FIG.
When closing the doors 1 and 1 in the open state, when the conductor switch 4 is switched, the solenoid valve 5 for opening and closing is switched, and air flows into the left side of the cylinder 2 of the door closing machine, and the right side of the cylinder 2 Is discharged through the solenoid valve 5 and the doors 1 and 1 are closed.
When the doors 1 and 1 are closed and the door closing switch 3 is switched, the controller 8 incorporating the weakening operation sequence switches the solenoid valve 6 for weakening operation, and the solenoid valve 6 is held for a set time T1. Then, the air on the left side of the door-closing machine is discharged from the weakening operation electromagnetic valve 6 to the set pressure of the pressure reducing valve 7.
[0010]
For this reason, the door closing force commensurate with the pressure drop is reduced to “weak”, and the door closing force becomes weak for the set time. At this time, when the doors 1 and 1 are forcibly opened, the door closing switch 3 is switched, so that the weakening operation electromagnetic valve 6 is switched by the sequence of the controller 8 for performing the weakening control. Normal pressure air flows in, resulting in a “normal” door closing force.
Therefore, the doors 1 and 1 are closed again only by the passengers opening the doors 1 and 1 slightly. Since the thing which a passenger pinched | interposed is a small thing or a thin thing which the door closing switch 3 switches, it is enough to open only slightly.
[0011]
When the doors 1 and 1 are closed and the door closing switch 3 is switched, the weakening solenoid valve 6 is switched again, and the door closing force becomes weak as described above. Therefore, even if an object cannot be removed, it can be pulled out or removed by forcibly opening the doors 1 and 1. This operation can be repeated within the set time T1. In addition, if the passenger tries to open the closed doors 1 and 1 by force, the door closing force is weak at the beginning, so it can be opened easily. It cannot be opened to the size that can be. In other words, it can return to the normal door closing force just by opening it a little, so you cannot open the doors 1 and 1 and force it into the vehicle.
However, in the conventional characteristic shown in FIG. 3, it can be seen that the “normal” door closing force does not return to a “weak” door closing force when an object that is manually opened and pinched is removed. For this reason, it is dangerous to force the door to open more than necessary and it is dangerous, and a person can be forced into the vehicle.
[0012]
【The invention's effect】
As described above, according to the present invention, the following effects can be obtained, and a safer vehicle door closing device can be provided.
(1) Passengers who try to remove objects caught in the door will not be injured by the door that moved suddenly after opening the door more than necessary after the object has been removed and the set time has expired.
(2) It is possible to prevent an intentional opening of a closed door and entering the vehicle.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for explaining a door closing device for a vehicle according to the present invention.
FIG. 2 is an operational characteristic diagram showing an embodiment of the controller of the present invention shown in FIG.
FIG. 3 is a diagram showing a conventional operating characteristic compared with FIG.
[Explanation of symbols]
1 Door 2 Door closing machine (Air cylinder)
3 Door closing switch 4 Conductor switch 5 Solenoid valve for opening / closing operation 6 Solenoid valve for weakening operation 7 Pressure reducing valve 8 Controller 9 Door rubber

Claims (2)

A door closing machine that opens and closes the door by pneumatic drive, a conductor switch that opens and closes the door according to the command of the conductor, an electromagnetic valve for opening and closing operation and an electromagnetic valve for weakening the door closing force that controls the air transmitted to the door closing machine, A pressure reducing valve that engages with the door closing force weakening electromagnetic valve, a door closing switch that operates when the door is closed, and a controller that controls the opening / closing operation electromagnetic valve and the door closing force weakening electromagnetic valve. ,
When the door is closed to start the train, even if a thin object such as a fingertip or clothing is caught, it is absorbed by the deformation of the rubber at the door end attached to the door closing side, and the door is completely closed If the passenger forcibly opens the door during the door closing force weakening operation, the door closing force weakening operation is interrupted and the normal door is closed. A vehicle door closing device comprising a controller having a control sequence that returns to a door closing force weakening operation again after the door is closed. The controller includes a control sequence circuit, and the control sequence circuit includes:
Receives the signal from the conductor switch and supplies air to the door closing side of the door closing machine via the solenoid valve for opening and closing operation and the solenoid valve for weakening the door closing force, and from the solenoid valve for opening and closing operation to the door opening side of the door closing machine Exhaust the air
When the door is closed, the door closing switch is activated to receive the signal, and the received signal urges the door closing force weakening solenoid valve to stop the supply of air to the door closing side of the door closing machine. At the same time, air is released from the pressure reducing valve set to a predetermined pressure to the atmosphere, the pressure inside the door closing side of the door closing machine is reduced, and at the same time the predetermined door closing force weakening operation duration is maintained,
After the door closing force weakening operation duration has elapsed, the door closing force weakening solenoid valve is de-energized, air is supplied into the door closing side, the door is closed, and the vehicle is in a starting state.
If the fingertip is caught in the door within the door closing force weakening operation continuation time, for example, the door closing side of the door closing machine is in a decompressed state, so the door can be opened by hand,
If the door is opened to such an extent that the fingertip can be removed by performing this operation, the door closing switch that has been operating until now is opened and the solenoid valve for reducing the door closing force is de-energized so that the air is closed. Supplied to the door closing side of the machine,
The door closes again and the door closing switch is activated, and the inside of the door closing side is depressurized.
The vehicle door closing device according to claim 1, wherein the door opening / closing operation can be repeated as long as the opening / closing of the door is within a door closing force weakening operation duration time.

Images